The NIV has translated two Hebrew words: Adonai (Lord) and the divine name/Tetragrammaton (Lord). A literal translation would thus be Lord Lord or Master Lord. David will address the Lord in this manner on seven occasions in his prayer (2 Samuel 7:18, 2 Samuel 7:19, 2 Samuel 7:20, 2 Samuel 7:22, 2 Samuel 7:28, 2 Samuel 7:29).1 The phrase itself affirms that the Lord is David’s Lord/Master. The same phrase was also used by Abraham in response to the promises which he heard from God (Genesis 15:2, Genesis 15:8).2
18 Then King David went in and sat before the LORD and said, “Who am I, O Lord GOD, and what is my house, that you have brought me thus far?